orm nhibernate

Label:One, Access database configuration NHibernate itself does not support Access database, a start to look at the various documents on the web, pounding wasted n minutes. Or the NuGet artifact citation nhibernate.jetdrive. Here's the code. private string FilePath {get; set;} Private Isessionfactory buildsessionfactory () { var connectionString = string. Format ("Provider=Microsoft.Jet.OLEDB.4.0;Data source={0};", this. FilePath); Return Fluently.con

//nhibernate Various database connection parameter file configuration method descriptionThe configuration file Config/hibernate.cfg.xml content is as follows:Where: Specific database needs to be modified by the following description:=========================================================================================SQL Server Configuration method:------------------------------------------------------------=========================================

on a blog, through a small demo to roughly introduce the use of nhibernate process. Using NHibernate, the most fundamental is "CRUD" (Increase and deletion). What we often call a unit of work, typically performing 1 or more operations, is either committed or discarded/rolled back for these operations. If you only query the data and do not change its value, you do not need to commit (or roll back) to the dat

introducedIn object-oriented development, the operation of the program is through the object of the database to make the deletion of the operations, it is inevitable in the persistence process to produce some columns of the object, such as landing, will inevitably have an instantiation userentity object, from the database Select out of the object, Save to the database object, how to distinguish between these objects and the state of the current session, see below

Id (x = x.id).1. Nhibernate.propertyvalueexception:not-null property references a nullor transient value abc.de. FGInsert value does not set NULL2. Row was updated or deleted by another transaction (Orunsaved-value mapping was incorrect)Try{session.persist (instance);} catch (Persistentobjectexception e) {try{session.merge (instance);} catch (Staleobjectstateexception ex) {Session.save (instance);}}3. NHibernate:SqlDateTime overflow. Must be between 1/1/175312:00:00 AM and 12/31/9999 11:59:59 PM

Nhib.pdf Configuration There are three methods to store Nhibernate configurations. 1. Put it as a separate section in the configuration file of the corresponding program. Add. config to the name of the execution file or class library, and put Asp.net in Web. config. In this way, the configuration section of Nhibernate must be declared in configsetions of the configuration file,The configuration content is

NHibernate Filter (15th article)　　The NHibernate filter is equivalent to defining a WHERE clause that is very similar to that used on classes and collections. Filters are not enabled by default in ISession and must be explicitly enabled through the Isession.enablefilter () method. The method returns an instance of the IFilter that is enabled. This also supports chained operations.The primary configuration o

1 configuration of the App. config:Database= ' NHibernate '; server=.; uid= ' sa ';p wd= ' sa ';--------------------------------------------------------------------------------------------------------------- -------#region 2. App. Config configurationConfiguration config = new configuration (). addassembly ("Test.model");Factory = config. Buildsessionfactory ();Session = Factory. Opensession ();#endregion-----------------------------------------------

http://blog.bennymichielsen.be/2009/01/04/using-fluent-nhibernate-in-spring-net/http://comments.gmane.org/gmane.comp.windows.dotnet.nhibernate.user.general/21840Http://codegur.com/2049968/configuring-asp-net-mvc-2-with-spring-net-and-fluentnhibernateSql:CREATE TABLE staffmanager (managerid int IDENTITY (PRIMARY) key,managerstaffidkey int FOREIGN KEY REFERENCES Staffmembe R (StaffID), --Staff ID foreign key Manageris BIT DEFAULT (1),--account is vali

The most common applications for example queries are composite queries, and we often need to provide several query options on the interface, and then return the results that match the criteria based on the user's input.It is often necessary to deal with complex conditions when dealing with code directly, which makes the structure of logical judgment Statement complex because of uncertain combination conditions. For multiple optional parameters, the situation becomes more severe.You can easily ha

Nhibernate concurrency control"1" Pessimistic concurrency controlThe operation that is using the data, plus the lock, unlocks the resource when it is finished.Usage Scenario: Data is highly competitive and the cost of locking is lower than the cost of rolling back the transactionCons: Blocking, possibly deadlock"2" Optimistic concurrency control:The so-called optimism is optimistic that other people are not using the resource, resource users are not l

SQL: Normal SQL queries (i.e., query statements for databases such as Sqlserver,oracle,sybase, recommended for use based on TSQL-92)Core object:createsqlqueryIList list = session. Createsqlquery (SELECT * from Tabuser). Addentity (typeof (Tabuser)). List ();HQL: Hibernate queryCore object:createqueryIList list = session. CreateQuery ("from Tabuser t where T.id>:id"). SetString ("id", "10"). List ();criteria: Standard or conditional query, Icriteria has a number of properties and methods to choos

The contents of this section Introduced Load now Example analysis 1. Example of a one-to-many relationship 2. Multi-Many-to-many Relationship Example Conclusion Introduced By introducing the previous article, we know that the default loading mechanism in NHibernate is deferred loading. The essence is to use GoF23 in the proxy mode implementation, this section we simply analyze nhibernate another loa

' Oracle.DataAccess.Client.OracleConnection cannot be cast to type ' System.Data.Common.DbConnection '. exception This exception is thrown by the "nhibernate\tool\hbm2ddl\suppliedconnectionproviderconnectionhelper.cs ". Line 25th: "connection = (DbConnection) provider. Getconnection ();”。 There is a way to bypass this line of code execution, is to add a line in the Hibernate.cfg.xml "In addition to the above demonstration, you can also call Oracle's

Tags: using OS io for AR CTI Code newThe Setresulttransformer method of NHibernate will appear under Oracle "Could not find a setter-for-property" error, which is a bug that NHibernate uses under Oracle. I can fix it myself for this bug. Download the NHibernate source code, the property under the "ChainedPropertyAccessor.cs" minor changes will fix this bug, the c

what is an ORM framework Object-relational mapping, the current database is relational database ORM is mainly to map the relational data in the database to the object in the program. The common ORM Framework is currently concentrated1 NhibernateReason: Use more, the data is also more easy to find.2 Castle ActiveRecordReason: It's better than

1. Create a Web site project: QuickStart2. Referencing assemblies: NHibernate.dll3. Change the configuration file to join the following nodes:　　4. Create a model class:namespacequickstart.models{ Public classCat {Private stringID; Private stringname; Private Charsex; Private floatweight; PublicCat () {} Public Virtual stringId {Get{returnID;} Set{id =value;} } Public Virtual stringName {Get{returnname;} Set{name =value;} } Public Virtual CharSex {Get{returnsex;} Set{sex =value;}

http://blog.csdn.net/jimfire/article/details/4323702I don't know why I called flush () after I executed insert or delete,update, and then I looked at http://www.cnblogs.com/lyj/archive/2008/10/17/1313612.htmlKnow, originally, ISession in the memory of the data, if the session is not synchronized, then the original call session saved is to modify the database data before the data. Only the flush () function is called to synchronize with the data in the database.Flush of ISession in

[NHibernate] load nowExample 1: One-to-multiple relationships load customer information and customer order information by loading them immediately. Copy code 1 //

Smart tips for NhibernateNhibernate.dll on the following pathC:\Program Files (x86) \reference Assemblies\microsoft\framework\. Netframework\v4.0\profile\clientNhibernate.xml on the following pathC:\Program Files (x86) \reference Assemblies\microsoft\framework\. Netframework\v4.0\profile\client\zh-hansThis two folder is actually a hint file for. NET class libraries and class librariesNot just nhibernate, but other class library files are the same.Nhib